#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

#include "array.h"

static data_unset *data_string_copy(const data_unset * s)
{
	data_string *src = (data_string *) s;
	data_string *ds = data_string_init();

	buffer_copy_string_buffer(ds->key, src->key);
	buffer_copy_string_buffer(ds->value, src->value);
	ds->is_index_key = src->is_index_key;
	return (data_unset *) ds;
}

static void data_string_free(data_unset * d)
{
	data_string *ds = (data_string *) d;

	buffer_free(ds->key);
	buffer_free(ds->value);

	free(d);
}

static void data_string_reset(data_unset * d)
{
	data_string *ds = (data_string *) d;

	/*
	 * reused array elements 
	 */
	buffer_reset(ds -> key);
	buffer_reset(ds -> value);
}

static int data_string_insert_dup(data_unset * dst, data_unset * src)
{
	data_string *ds_dst = (data_string *) dst;
	data_string *ds_src = (data_string *) src;

	if (ds_dst -> value -> used)
	{
		buffer_append_string_len(ds_dst -> value, CONST_STR_LEN(", "));
		buffer_append_string_buffer(ds_dst -> value, ds_src -> value);
	} 
	else
	{
		buffer_copy_string_buffer(ds_dst -> value, ds_src -> value);
	}

	src->free(src);

	return 0;
}

data_string *data_string_init(void)
{
	data_string *ds;

	ds = calloc(1, sizeof(*ds));
	assert(ds);

	ds->key = buffer_init();
	ds->value = buffer_init();

	ds->copy = data_string_copy;
	ds->free = data_string_free;
	ds->reset = data_string_reset;
	ds->insert_dup = data_string_insert_dup;
	ds->type = TYPE_STRING;

	return ds;
}

